Overview:

The ASPC1 Audio System Polarity Checker is an essential tool for sound system technicians to check that all the drivers in a sound system are operating with correct polarity. The product comes in two parts:

The pulse generator; always gives a signal in positive phase with a flashing yellow LED to show tempo of pulse and to show that the product is in operation.

The detector; has green and red LEDs to show whether the driver has a positive or negative polarity and a flashing yellow LED to show that the product is in operation.